Rod mill



K. Z. HUSZAR July 4, 1950 ROD MILL Filed July 20, 1949 INVENTOR. AHLMd/YZ M8216? QZZIW *dl uv ATTORNEYS.

Patented July 4, 1950 UNITED STATES PATENT omce j ROD MILL Kaiman z.Huszar, North Indian Hill, Ohio 7 Application July 20', 1949, Serial No.105,739

My invention relates to an improved rod mill for crushin pulverizing ormixing materials such as dye, face powder or the like.

A principal object of my invention is to provide novel means for at onetime aiding in the recirculation of material within the rod mill, and atanother time to aid in the discharge of such material from the mill.

Another object of my invention is to provide means for recirculatingmaterial within the mill, and also fordischarging such material from themill, which means may be fixed to the rod mill, said means not requiringfurther adjustment or interchanging of parts. I A further object of myinvention is to provide improved recirculation and discharge means forhandling moist or sluggish material.

Still another object of my invention is to provide a combinationrecirculation and discharge means for rod mills which is easy to 13Claims. (CL 241 -171) manufacture and easy to use, thus resulting in aFigure 2 is an end elevation of my improved rod mill as seen from theleft of Figure 1; a

Figure 3 is a section on the line 33 of Figure 2; Figure 4 is asectiontaken on the line 4-4 of Figure 2;

Figure 5 is a view similar to that of Figure 2 but showing the 4 devicein its recirculation operation;

Figure 6 is a view similar to that of Figures 5 2 pulverizing unitsindicated at It in Figures 3 and 4, and it is also provided with anopening by means of which the mill may be charged with material to beground and mixed. As shown in Figure 1' this opening .is provided with acon-:1 ventional, removable cover member l-l.

Fixed'at one end of the rod mill I0 is a rim gear l8. A driving pinionl9 carried by a shaft 2i] meshes with the gear l8 and thereby servestodrive the mill ID. .A pinion and shaft Iii-20 are driven by means ofrasuitable motor indicated at 2!, conventional coupling being made toastandard variable. speed and reversing unit. indicated generally at'22. 1

[As best seen in Figures 3 and-4 the left end 0 the mill I0 is provided.with a closure plate 23. A pair of openings 24 and 2 5 are provided inthe sidewalls of the mill [0 adjacent the closure plate 23'. The closureplate 23 is provided with a centrally located opening 26.

Fixed to the mill in is a recirculation and discharge conduit meanswhich may comprise a pairof. radially disposed housings 21 and 28joinedutogether by a suitable section 29. This arrangement may,ofcourse, be varied; e. g., the

v housings may be joined together directly, or even formed of oneintegral unit. These housings comprise generally U-shaped units havingtheir side walls fixed to the plate, 23 and having end flanges 30 and 3|which may be welded or otherwise secured tothe outer wall of the rodmill l0.

As best seen in Figures 3 and 4, the openings 2.4

and 25 are located .between the closure plate 23 and the juncture of themill 10 with the flanges 30.,and 3|, these openings and flanges-thuscomprising -,communicating passages between the housings 21 and 28 andthe rod mill I0.

and 2, but showing the device in its discharge parts. The housingsections 21, 28, and 29 are operation, and

, Figure '7 is a view generally similar to Figure 5 but depictingfurther modifications of my invention.

Referring first to Figure 1, there is indicated at I!) a rod mill whichis rotatably supported in a bearing II and standard I2 at its one end,and which is supported at its other end by means of a pair of rollers13, said rod mill being provided with a metal strip or the like H! forthis purpose. The standard I2 and rollers I3 may be supported in anysuitable manner from a base structure generally indicated at I5. Themill I0 is provided with a plurality of conventional rods or As best,seen in Figures 2 and 4, a baflle-or separator. plate 32 is fixed to,the closureplate 23 so that it extends longitudinally of the house,

ings 21', 28 anddividesthe opening 26 into two so formed as to providean opening 33 corre-. sponding to the opening 26 and located just op-.posite it, as best seen in Figure .3. The baflie 32 just. nicely fitsbetween the closure plate 23 and the outer walls of housings '21 and 28.This bafiie is of sufiicient lengthtoextend beyond the openings 26 and33 and into the housings 21 and 28. i, As best seen in Figures 2 ,andei,apair of guide plates. 34 and 35 arefixecl at their one longitudinaledge to the baffle 32 and at their other such edge be discharged fromthe: mill.

3 of the housings 21-28. Thus it will be seen in Figure 4 that the guideplate 35 extends from the plate 23, at the upper edgeof the opening 26,to the juncture of the housings 28 and 29, the lower edge of the opening33. Similarly the guide plate 34 extends from the plate 23 at the loweredge of the opening 26, to the juncture of the housing members 21 and29, the upperedge of the opening 33, Thesemembers 34 and 35 are thuslocated on either side of the baffle 32 in sucha manner as to form across or X when viewed in cross-section as seen in Figure 4. Anysuitable discharge device may be attached to the above described conduitmeans by means of the ring member 36 which is fixed thereto.

The operation of my device will now be described. Material which ispulverized or othersome of these arrows being shown in dotted lines tothus indicate material which is within the housing and the other of sucharrows being in solid lines, indicating that the material has emergedinto sight as seen in that figure, and as would be the case when it isdischarged from the mill I0. In similar manner continualcounterclockwise rotation of the rod mill I will bring the housing 2:!to that :position', indicated for the housing 28 in Figure '"6. 1 Thus",material will be discharged from the rod mill l0, through the 1 'opening24, into the housing 21 and will be car- ,ried by the bottom of thehousing 21 and then by the side body wall of such housing until suchtime'that the material will fall by gravity v between the b dy Wallofthe housing 21 and wise mixed in the rod mill I0 isdischarged! throughthe openings Miand 25 into the conduit means, the rod mill being:rotated. in either one direction or the other. Considering Figure andassuming clockwise rotation ofv the rod mill Ill as viewed in thatfigure, and: asindigated by the arrow 31, there is shown mywdevice whenused; to recirculate the material discharged from. the rod mill [0 intothe housings 21- and 28. When the IOdi mill Ill is. inthe position shownin Figure 3 materialis discharged from the mill L0, through thepassageway and into thehousing 28. As

themill I 0' continuestclockwiserotation, the housing 28 moves upto theposition shown in Figure .5.

I the housing'28 moves. from the position oi Figure 3 to that of Figure5', thelmaterial which hasscollected in the bottom of the housinggradually shifts in position so that it is carried-by the such body walland thebafile 32 and will fall upon theguide plate S5andbedirectedbackinto the rod mill Ill through that portion of the open.- ing 26 whichcooperates withi therguidelplatei35, I have indicatedthe path. oftravelof such material by the .dottedarrows in the Figure 5. It

will bereadily observed from this last mentioned figure. that asthehousingiZL follows thehousing 28 inclockwise direction, materialdischarged from the opening 24 into the housing 2:L-will be carried bythev bottom of -this housing and later byv its side wall, to suchposition that this ma- 1 terial will fall down between the body wall ofthehousing 21 and the baflle 32 in the same manner as has just beendescribed in connection with i the housing 28, Thus this materialwilltall upon the guide plate 34 and likewise be directed back 1 into therod mill l0. 1

When it has been determined that further mixing is no longer desired,but'ratheri that it is desired to discharge the now pulverized and Imixed material'from themill I0, the direction of rotation of the millisreversed. By this simple 1 expedient of changing thedirection ofrotation of the rod mill l0, the pulverized material will of Figure 6will show thisto be true. Thus as the material is discharged fromthemill land into the passage 25 and into the housing 28, such material iscarried by the bottom of the housing An examination 1,

28, and later itsside walls; until the housing The path of such materialis Parts WhiQh. must the "b'aflle 32; This falling material will strikethe guide plate 34 and be discharged through that portion of the opening33 which cooperates with he gu delant V 7 It houl he noted that l have pov ded a simple dev sebr me ns'qf hi h mate ia m e e h i char ed. r mzie rod mi l fo ircula ed kinto the rol ini l'. l lby thesi mi ex ed e iso h dire i n. o r tatiqn 9i h smii -n Such g r n em n m y e a ly acheaply edandi is one which saves a r at deal o t me hatthere uan be inerchan ed or a u ted v .ziwh rom the ecir ulati n qp aiipn we? r q eraon, a 7

Re errin n w.- :tQFLgllrg 7, here is shown modifications of the basicinvention which I-have inst qe qr bs l, Que ithe e -fioations is a lhesiewallsiai th mus ngs J21. and-2.8. may be of arcuate shape.lrliarefonndthat inst b8 mi in o moi or lu ish materials there is a teden fo .l1.0.1-. -.m ter to. be carried too a fo e ropnin bynayitybetwceenith side wall o the hous n s, and-the :baflle plate. 32.If however, I ,fqrm ,-the housing as indicated in Figure '7, suchmaterial will start its downward movement an earlienpoint :in its roion. A comparison f llli ll tes, 7 andwfiwill showthat thi i l arly-VsosIt should-be observed, how.- e lg ll fi a hough Lam aiblehtor startthe-ma: terial to fall sooner means of the arcuate V shaped housingmembers, I do so at a sacrifice of the velocity oi drop. oaths materialascompared to that obtained by-the use of the straight s d, u ingmembers shownvin Figure 5'.

Another; modification of my. invention is also, shown in Figure andthis. is, the fact that the bafiie 32 does-not have to be located sothat'it bisects the housings 2'! and 28 as is shown in Figure 5 forexample. Thus this baffle 32 may be positioned in a slant position, or,similarly it may be curved as is shown in Figure This allows more roombetween -,.the2side malls of the housing and the bafiie plate, i. eritprovides a larger passage in which the material may drop back into themill in, thatishclockwise rotation of the rod mill H1. .By :the sametoken, how ever, this will allow less room between-the side wall membersofthe housings Z'l-aand 23 and the bafilet32 vwhen the mill isrotatedicounter-clocke wise inthe discharge operation. In spite. of thislatter fact, however, .suchan ,arrangement is valuable becauseas apractical matterz-it is roommonly the practice to rotate thero'd mill atmuch higher speeds duringflthe' recirculation opera tion'than are usedduringthe discharge operation. It is therefore better to have a greaterpassageway for the material to' f ollow in i e-entering the mill [0. Thereason for this is that greater speeds of rotation of the rod mill willtend to cause the material to be carried farther around the p'ath ofrotation before it will be'caused to drop by gravity through-thepassageways pro vided. Since the speeds 'ofrotationfor'the dischargeoperation are. slower, there is not this tendency for the material to becarried too far, and therefore it is not necessary that there be such, awide channel. Although I have shown both of these modifications, that isthe curvedsided housings and the slanted 'or curved baflie as combinedin the sameunit, it should be noted that neither one of theseimprovements may be incorporated in the basic invention shown in Figures1 to 6. By that I mean it is obviousthat the'straight-sided housings 21and 28 could be used in connection with a curved or slanted baflle 32and it is equally obvious that the curved-sided housings 21 and 28 couldbe used in connection with a baffle 32 located in such position asshownin any of the Figures 1 to 6, rather than the curved or slanted baffleof Figure 7.

Changes and modifications may be made in my device without departingfrom the spirit of my invention, and I do not intend to be limited tothe specific structure "shown except. insofar as is set forth in thesubjoined'claims. In this connection it should be noted that myinvention maybe easily adapted to use as a toy or the like by buildingit in miniature. The value of such adaptation lies in that my rod millprovides extremely uniform mixing coupled with easy discharge, suchcombination of features making my device particularly desirable for usein mixing together a plurality of numbered balls or the like and thendischarging them in random order. It is thus to be understood that suchadaptationand all others embodying the use of the structural featuresdeveloped by me, whether such features be made in miniature or fullsizeis distinctly within the scope and spirit of my invention as hereinshown, described and claimed.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. In combination with a pulverizing mill including a rotatable bodyformed with a cylindrical side wall and opposed end walls, conduit meanscomprising an outermost wall and side walls, said means being fixed tosaid mill adjacent one of said end walls, passage means located in saidcylindrical side Wall for directing material from within said mill intosaid conduit means, said one end wall being provided with a centrallylocated opening, a baflle extending between said one end wall and theoutermost Wall of said conduit means, said outermost wall being providedwith an opening substantially registering with said centrally locatedopening, said baifle being of substantial length relative to said oneend wall and extending into said conduit means substantially centrallythereof, said baifle being so located as to divide each of said twoopenings into two portions, and a pair of guide plates, one at eitherside of said baflie and at substantially right angles thereto, each ofsaid plates extending between said baffle and a side wall of saidconduit means, one of said plates, extending from the top of saidcentrally located opening to the bottom of said opening in the outermostwall of said conduit means, and the other of said guide plates extendingfrom the bottom of said centrally located opening to the 4. Theapparatus of claim 1 in which the side walls of said conduit means areconcave and inwhich'that portion of said bafiie. which extends into saidconduit means adjacent said centrally located opening is bent away fromthe center line of said conduit means. 1

5; In' combination a pulverizing mill including; a rotatable body formedwith a cylindrical side;

wall and opposite end walls, a pair ofradiallyi disposed housings fixedto said mill adjacent oner of said end walls, each housing comprisingan.outer wall and opposite side walls fixed to said one end wall, saidcylindrical wall having opposed openings, passage-forming means fixed tosaidhousings and extending outwardly therefrom,

said passage-forming means communicating with:

said housings and encompassing said openings, said one end wall havingan axial opening, said housings being provided with an opening coaxialwith said first mentioned opening, a'bafile fixed to and extendingbetween said oneend wall andsaid outer walls, said baflie being locatedsubstantially centrally of said coaxial openings and extendinglongitudinally of said housings a predetermined length, and a pair ofguide plates, one fixed at either side of said bafiie and substantiallyat right angles thereto, each of said plates extending between saidbaffle and a side wall of said housings, one of said plates extendingfrom said one end wall at a position adjacent the top of said firstmentioned opening to an outer wall of said housings at a positionadjacent the bottom of said second mentioned opening, the other 0i. saidplates extending from said one end wall at a position adjacent thebottom of said first mentioned opening to an outer wall of said housingsat a position adjacent the top of said second mentioned opening.

6. The apparatus of claim 5 in which said opposite side walls areconcave.

7. The apparatus of claim 5 in which that portion of said baflle whichextends into each of said housings is bent away from the center linecommon to said housings.

8. The apparatus of claim 5 in which said opposite side walls areconcave and in which that portion of said bafiie which extends into eachof said housings is bent away from the center line common to saidhousings.

9. In a rod mill or the like comprising a cylindrical body having endwalls, means for rotating said mill in either direction, conduit meansfixed to said mill adjacent one end wall thereof, said conduit meanscomprising an outermost wall and side walls fixed to said one end wall,said one end wall having a centrally located opening, passage meansleading from said cylindrical body to said conduit means and throughwhich material passes from said mill to said conduit means upon rotationof said mill in either direction, said outermost wall having an openingsubstantially registering with said first mentioned opening, and aseparator plate located between said one end wall and said outermostwall so as to cause material carried by said conduit means upon rotationof said mill in either direction to fall bethe side gamma tween-it andthecend uitside wall; trailing .as said mill is so rotated, saidseparatoraplatelbeingi pdsitinned substantially centrally of. said:first and said second mentioned openings anddividm ing each at saidope'nings inte twolparts', andj oppositelydispesed-" plate meansfixeda-at. ei/ther sideof said: separator plate seas tosdivertsaid.falling material through-said first mentioned. openingon one directionof rotation of saidlmille and: through. second: mentioned; opening .enrotation 10f said: mill .in-.the otherz-direction, plate means. having asubstantially .Xeshapedl configuration :as. viewed in. sideeleyatiom10;.5Ihe apparatus. of .claim. 9.; .in. whichrthel side walls of saidcondnitmeansare concave.

111;..The apparatus. or claim. .9 in which-.ithat portion; .oiasaidseparator .plate which. extends; intolsaid :conduit means; adjacent.said centrally. locatedsopeningl islbent away fnomthe. center-line 0isaid-conduit means. I ih'e app ratus. of claim. 9 in. which: the; side:wa ls. of; said cpnd it. means are concave and-in. which. hatp rt n. fsaid senar tpnpiate. which: exte ds. into: said; conduit means. fill-51s c nt aid; ent ally pcete penin s. ent. away.- froms he; en e line of.said: condui means.

I 1.3- like. ap ar tus. r cl im aWhich he.

bend. q aid e ar tor plate s s ch hathere. is r ater pace. etw en saidparator. plat and. its, trailing conduit side. wall when. saiclimill';

REFER-mans, CITED:

"The following references are of record file' of this patent:

STA'I'ES. PATENTS 1 Number Name Date 14.83531 Wilson 10, 1817.41

. .310*,026l Bruning Dec. .30; 1884a 1363 9.64 Brenner June 21,1932;2,057,526.. HOIZtGHs Oct. 13,..I936l :2 252520' Betersen Aug. .12;v 1941 .2;299;032: Ransohoffi Oct. 13;; 19.425 2.361585 Huszar. Jan..16,1914'5; 213922.45 Huszar Jan. 1.1946 2,394,453 Huszar Feb. 5, 1946:2,429.62? Huszar- Oct. 28,1194? FOREIGN PATENTS Number Country Date. I10,862 France Oct. 21,1909

(Addition) V V 516,339 Great Britain Jan. 1, 1940

